"use strict";
let user = {
  name: "后盾人",
  age: 14
};
Object.seal(user);
console.log(JSON.stringify(Object.getOwnPropertyDescriptors(user), null, 2));
if (!Object.isSealed(user)) {
  user.site = "houdunren.com";
  delete user.name;
}
user.name = "rgss";
console.log(user);
// for (const [key, value] of Object.entries(user)) {
//   console.log(key, value);
// }
